Glass-grinding machine.



E. STALZER. GLASS GRINDING MACHINE. APPLICATION FILED APR. 11, 1914.

Patented July 14, 1914.

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' Patented. July 14,1914.

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, Beitlmown that "I, ERNEST I 7 subject of the Emperor of Austria-Hungary residing at New York city, of

i STATES;

PATENT omen.

nimns'r s'rnnznn, or new YORK, n. Y.

crass-amine mlcnnwn specificationof Letters ia-tent. Ratented. July 14, 191 4, I Application filed a rn 11, 1914. strain... sa1 .119.- w

To all whom; z't may concern I S'rALzEn, a

boroug Brooklyn, county of 'Kings, State df New York, have invented certain new and useful- Improvements in Glass-Grinding Machine's, 'of which"the following is a full, clear, and ;exact description. l j

This invention relates to an improvement in glass-grinding machines, the object'being' inding machine which is 4 more particular y adap -r1 to grind or bevel the-ends of glass rods or tubes, special. clutching means beingprovided and specialmeans to grind'bevels of different angles I will now tion in deta1l, the essential features of .which' will be summarized in the appended claims, reference being bad to the accom panyxg drawing, forming part hereof,

Figure 1 is a longitudinal sectional view of my improved grinding machine; Fig. 21s

a plan view thereof; Fig. 3 is an "enlarged I as cross-section, the section.being taken' on a 'line 33 in Fig. 1; Fig. l is an enlarg sectional detail view of a portlon' of the clutch-jaw holder and aclutch-jaw; Fig.

' is a side elevation of the machine; and Fig.

6 is an enlarged end-view of the clutchjaw holder and supporting head. 7

My "mproved glass grinding machlne consists of a frame 1 pivoted as at 2 to a plate 3 slidably' mounted on guides 4: carried. by a suitable standard. The frame 1 is pro-' vided with a hollow rotatable shaft or spindle 5 in which the article indicated by 6 (in this instance a glass rodyis placed.'

To hold the rod in place, I provide a, clutch mechanism consisting ofa holder 7, secured to the shaft 5, and rotatably supported in a head 7 a on the framel the said-holder being provided with a plurality of slidably mounted clutch-jaws 8 faced on the inner ends I, with leather or other highly frrctlonal substance indicated by. 9, the said jaws being adapted to aline with the bore of the shaft 5. The clutch-jaws 8 are .held in guideways 10 in the holder 7 and are adapted to move freely in said guide-ways. Each jaw 8 isprovided with a reces 10 to receive the rounded end ll of a lever 12/ Thelevers 55-. I I

12 are pivoted-a 13 a fuse-um head 14 integralwith older- "To actuate mounted on. the shaft .5. To actuate the rotated by any suitable; mechanism. In combination with the clutch mechanism and rotatable 'shaft' 5, I employ a rotatable grinding stone or element-indicated by- 20, which acts to bevel and "grind theend of the glass rod-6 atthe outer end 21. t.

the shaft 5, then depress the foot pedal,-

the cone 15 to the left, which actionraises the arms 22 of the'lever's 12, causin the short jaws 8 against the'rod'fi, which protrudes beyond the-end of the shaft 5 as shown in Fig. 4, and grip the same. I then .turn the frame-'1 upon its pivot until ,the required angle Ii." obtained, after which I tighten the bin ing screw 24 and lock the "frameat the required angle. I 'then' start the device for rotating the shaft 5, after which I slide the-frame 1 toward the rotati ing. grinding element by means of the rack 25 on the plate 3 and intermeshin'g The rodis forced against the grinding e1ement until the required bevel is obtained. The rod can be removed after grinding by releasing-the foot-pedal, causing the spring 25 to move. the'cone toward'the right, at which time the springs 26* will cause the sition as tocausetheend to aline with the plate-.3 is-moved inwardly causing the end of the rod to contact with the stone. To limit the inwardmovement of the plate, I provide an adjustable stop 29 actuated 'by 3 will strike the stopw enit has been moved the required distance.- F or' -beveli'ng, the rod 6 is drawn out ofthe shaft therequired distance. The frame 1 is then angularly adjusted and caused to-move in'wardlyby cone, I provide a forked lever 16 pivoted as at 17 to the frame- 1. The forked lever. is actuatedby afoot pedal 16, whiohactu ates the rod. 18- secured to'the' short arm 17 of the forked lever 16. The shaft 5 can be which actuates the forked lever 16 to slide arm :23 of said levers to force t e clutchjaws .8 to open and release the rod 6, which can be withdrawn for the purpose of grinding the other end thereof, or for complete removal. To 'grind' the end of the rod, the I said rod is placed in the' shaft 5 in sucl1' po-.

surface 28 of the grinding stone. Bymeans' I of the rack 25 and rotatable pinion 26 the 'a threaded rotatable spindle 30. The plate the levers in turii actuate the clutch-jaws 8, I provide va cone. 15 slida bly'.

, Tooperate the device, I: place the rod in pinion 26 carried by the rotatable shaft'27.=

the aforesaid rack and, pinion.' To limit the inward movement of the plate, for

' out, is:

grinding purposes, I provide an auxiliary stop consisting of a lever. 31 having a rounded end 32' The lever i moved to cause the rounded end to be positioned ahead of 'the plate 3, hence when the said plate has moved inwardly therequired dis tame the stop or end 32 will strike the adjustable stop 29. I a

Having now' described my invention, what I. claim and-desire to secure by Letters Pat- 1.'-A glass grinding and beveling" machine consisting of a standard, a slidable plate carriedthereby, a frame pivotally supported by said plate, means to slidesaid plate, an

adjustable stop carried bysaid standard adapted to limit the, inward movement of "said plate, a'head carried by said pivoted frame, a rotary carrier located therein, a

, rier adapted to grip a glass rod, means to 'pluralityof clutch jaws carried by said car- 'actuate said jaws anda grinding element.

.2. In a glass grinding'machine, the com- 'bination of a slidable plate with a frame "pivoted thereon, means for sliding said plate, an adjustable stopfor limiting the inward. movement of said plate, clutch jaws ing said jaws and rod, a grinding element held in positi'onfor contact with. said rod and means for sliding said plate.

3. In a glass grinding machine, thecombination of a stationary grinding element with a tubular shaft adapted to contain a glass rod and arranged to present it to' the said grinding element, means carried by said shaft for clutchingsaid -rod,-means;f0-r.

rotating said shaft, means for varying the inclination of said shaft with respect to said grinding element, means for feeding said shafttowardsaid grinding element and an adjustable stop for limiting the movement ofsaid'shaft. i

4. In a glass-grinding 'bination of a stationary grinding element with a tubular shaft adapted to contain a glass rod and arranged to present it to said grinding element, clutching jaws for said rod turning with said shaft, means for closing said, jaws on said rod, means for rotating said shaft and jaws, means for varying the angular position of said rod with respect to said grindingelement and means for moving said shaft and rod toward and from said element.

5. A glass grinding and beveling machine consisting ofa standard, a slidable plate carried thereby, a frame. pivotally supported adaptedto grip a glass rod, means for rotat-- machine, the comby said plate, means to slide said plate, an adjustable stop carried by said standard adapted to limit the inward movement of said plate, anauxiliary stop for said plate also carried by said standard, a head carried by said pivotal frame, a rotary carrier 10- cated therein,,a plurality of clutch jaws carried by said carrier adapted to gri a glass rod, means to actuate said jaws, an a grindmg element.

6. A glass grinding and beveling machi'ne' consisting of a standard, a' slidable plate carried thereby, a frame pivotally supported by said plate, means to slidesaid plate, an

adjust-able stop carried by, said standard adapted to limit the inward movement of saidplate, an auxiliary stop for said plate also carried by saidstandard, a hollowshaft carried by said frame, a carrier'secured to said shaft, a plurality of clutch jaws carried by said carrier, a lever for each jaw, afulcrum for said levers integral with said carrier, a head carried by-'said frame rotatably supporting said carrier, a cone slidablyfl mounted on said hollow shaft adapted to actuate s'aidlevers, a foot pedal to actuate said cone, an adjustable stop to limit the inward movement of said slidable plate, means to actuate said stop, and a grinding element.

7. A glass grindingand beveling machine consisting of a standard, a slidable plate car.-

.ried there-by, a. frame pivotally supported by said pla'te,-means to slide said plate, an adjustable stop carried by said standard adapted to limit the inward movement of said plate, an-auxil-iarystop for said plate, also carried by said standard, a hollow shaft carried by said frame, a carrier secured to said shaft, a. plurality of clutch jaws carried by said carrier,-a lever for each jaw, a ful I crum for said leversintegral with said carrier, a head carried by said frame, rotatablysupporting said carrier, a. cone slidably mounted on said hollow shaft adapted to actuate said levers, a foot pedal to actuate said cone, an adjustable stop to limit the inward movement by said slidable plate, a

threaded spindle to actuate said stop, an 

